噪声与振动控制2019，Vol.39Issue(4)：150-154,5.DOI:10.3969/j.issn.1006-1355.2019.04.028
工装对前端模块约束模态试验影响分析
Analysis of the Influence of Tooling on Constraint Modal Test of Front End Module
李子俊 1郑康 2郑旭 1郝志勇1
作者信息
- 1. 浙江大学 能源工程学院,杭州 310027
- 2. 宁波工程学院 杭州湾汽车学院,浙江 宁波 315336
- 折叠
摘要
Abstract
The constraint modal characteristics of the front end module of a car are analyzed by means of finite element simulation and experimental test. The factors influencing the test results are found. The tooling design is improved and the constraint stiffness between the tooling and the front end module is strengthened. The test modals and the simulated modals are mutually compared and the reliability of the results of the finite element simulation is effectively raised. Based on the finite element model, the influence degree of different tooling constraint stiffness on the constraint modal test results is calculated. The results of the restraint stiffness test show that increasing the tooling constraint stiffness can effectively raise the accuracy of the test results of the front end module’s constrained modal, make the modals of different orders more independent and make test results and simulation results closer. Thus, the influence of the tooling constraint stiffness on the constrained modal test results is verified. This paper has a reference significance for the constrained modal test tooling design.关键词
振动与波/前端模块/模态试验与分析/工装/约束刚度Key words
vibration and wave/ front end module/ modal test and analysis/ tooling/ constraint stiffness分类
交通工程引用本文复制引用
李子俊,郑康,郑旭,郝志勇..工装对前端模块约束模态试验影响分析[J].噪声与振动控制,2019,39(4):150-154,5.
